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A 20.0 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling forve has a magnitude of 80 N and is directed at an angle of 30⁰ above the horizontal.

a) If the sled is being pulled at 1.0 m/s and the person stops pulling how far will it slide before it stops


b) If a taller person pulls the sled so that the pulling force is directed at an angle of 45⁰ above the horizontal, what magnitude of forve would be necessary to maintain constant velocity​

Sagot :

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